People play in different ways. It's not impressive when somebody thinks they are great at FM despite starting with all the best stats and at a club like Real Madrid (for example)
The best career I had on FM was starting unemployed, struggling in the first seasons with a conference side. Moved to the lower leagues in Northern Ireland, Germany and then Belgium before being offered a chance back in England. Kept a terrible side in the football league after joining midseason, then over the following seasons turned them in to promotion contenders. After getting them up I had a heartbreaking decision to make when a 'larger' club came in for me early on in the following season. I took the job but felt like I was bailing on the side I'd built and despite the new club having players with better stats I found myself returning in January to sign some of the players who'd served me so well at my former club. In the following seasons I gained promotion and was competing at the top end of the Championship when I became aware that the manager of Nottingham Forest (the club I support) was facing the sack. I declared my interest in the job despite them sitting midtable in League One and was offered the position. The squad was shockingly bad but, again, I returned to my former club to bring in the players I was familiar with and they helped turn things around and get us promoted as champions.
To many that may not be the greatest ever career in FM, but to me it was the most enjoyable. Starting at the bottom, playing LLM-style using the scouts to identify signings rather than just buying the same old players, working my way up and earning the job at the club I support whilst using players and staff who had developed a relationship with me.